KSPGuessSetFromOptions

Sets the options for a KSPGuess from the options database

Synopsis

#include "petscksp.h"  
PetscErrorCode KSPGuessSetFromOptions(KSPGuess guess)

Collective

Input Parameter

• guess - KSPGuess object

Options Database Keys

• -ksp_guess_type (fischer|pod) - turns on generation of initial guesses and sets the method; see KSPGuessType

• -ksp_guess_fischer_model model,size - set details for the Fischer models

• -ksp_guess_fischer_monitor (true|false) - monitor the Fischer models

• -ksp_guess_fischer_tol tol - set the tolerance for the Fischer models

• -ksp_guess_pod_size size - number of POD snapshots

• -ksp_guess_pod_monitor (true|false) - monitor the POD initial guess processing

• -ksp_guess_pod_tol tol - tolerance to retain eigenvectors

• -ksp_guess_pod_Ainner (true|false) - use the operator as the inner product (must be SPD)

See Also

KSP: Linear System Solvers, KSPGuess, KSPGetGuess(), KSPGuessSetType(), KSPGuessType

Level

developer

Location

src/ksp/ksp/interface/iguess.c

Implementations

KSPGuessSetFromOptions_Fischer() in src/ksp/ksp/guess/impls/fischer/fischer.c
KSPGuessSetFromOptions_POD() in src/ksp/ksp/guess/impls/pod/pod.c

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Index of all KSP routines
Table of Contents for all manual pages
Index of all manual pages